Method and apparatus for saving power in a selective call receiver

• US 5,821,873 A
• Filed: 07/26/1995
• Issued: 10/13/1998
• Est. Priority Date: 07/26/1995
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Burgan, John M., Lerner, Kenneth S.
• Primary Examiner(s): Zimmerman, Brian
• Assistant Examiner(s): MERZ, EDWARD W
• Application Number:
  US08/507,087
• Time in Patent Office: 1,175 Days
• Field of Search: 340/825.21, 340/825.44, 340/825.27, 455/38.3, 455/343
• US Class Current: 340/7.35
• CPC Class Codes: H04L 7/08 the synchronisation signals recurring cyclically
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 88/022 Selective call receivers
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for reducing power consumption in a selective call receiver includes the steps of first receiving a paging signal that includes a preamble and a plurality of batches, each of the batches having a synchronization codeword and a plurality of frames including at least an address information, detecting a skip code within one of the batches, skipping a predetermined number of batches without decoding any address information contained therein in response to the skip code, and decoding the address information of a one of the batches next subsequent to the predetermined number of batches. The skip code can be encoded in a portion of the signal, such as the synchronization codeword of the one of the batches, the address information of the one of the batches, and a selected frame of the one of the batches. The predetermined number can be contained in either of a codeplug in the selective call receiver or the signal portion containing the skip code.

Claims

1. A method for reducing power consumption in a selective call receiver, the method comprising:

receiving with a receiver circuit a paging signal comprising a preamble followed by a sequence of batches, each of the sequence of batches having a synchronization codeword and a plurality of frames;

detecting a skip code within one of the sequence of batches;

de-energizing the receiver circuit immediately following the detection of the skip code for a predetermined number of batches greater than one designated by the skip code; and

energizing the receiver circuit during a next batch following the predetermined number of batches designated by the skip code to enable detection of one of the skip code and address information.

2. The method of claim 1, wherein the skip code is encoded in the synchronization codeword.

3. The method of claim 1, wherein the skip code is encoded in the address information in a frame to which the selected call receiver is assigned.

4. The method of claim 1, wherein the step of skipping includes the step of first retrieving the predetermined number from one of a codeplug in the selective call receiver and a member of the signal group.

5. A method for reducing power consumption in a selective call receiver, the method comprising:

receiving with a receiver circuit a paging signal comprising a preamble followed by a sequence of batches, each of the sequence of batches having a synchronization codeword and a plurality of frames following the synchronization codeword;

detecting the synchronization codeword within one of the sequence of batches, and determining when the synchronization codeword is a non-standard synchronization codeword;

de-energizing the receiver circuit immediately following the detection of the non-standard synchronization codeword for a predetermined number of batches greater than one without decoding any address information contained therein in response to detecting the non-standard synchronization codeword; and

energizing the receiver circuit during a next batch following the predetermined number of batches designated by the skip code to enable detection of the synchronization codeword.

6. The method of claim 5, wherein the step of skipping includes the step of retrieving the predetermined number from one of a codeplug in the selective call receiver and the non-standard synchronization codeword.